Commit 5f2a105d authored Dec 22, 2006 by Andrew Morton Committed by Linus Torvalds Dec 22, 2006

[PATCH] truncate: dirty memory accounting fix



Only (un)account for IO and page-dirtying for devices which have real backing
store (ie: not tmpfs or ramdisks).

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent bb4067e3

mm/truncate.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -60,7 +60,8 @@ void cancel_dirty_page(struct page *page, unsigned int account_size)
		WARN_ON(++warncount < 5);
		}

		if (TestClearPageDirty(page) && account_size) {
		if (TestClearPageDirty(page) && account_size &&
		mapping_cap_account_dirty(page->mapping)) {
		dec_zone_page_state(page, NR_FILE_DIRTY);
		task_io_account_cancelled_write(account_size);
		}